Lubricating apparatus



Oct. 3, 1933. P UPHAM l 1,929,195

LUBRICATING APPARATUSl Filed April 17, 1950 2 Sheets-Sheet 1 r( o-f-o 110 11rd I Oct. 3, 1933. P UPHAM LUBRICATING APPARATUS Filed April 17, 1930 2 Shee'Ls-SheeI 2 Patented Oct. 3, .1933

' 1329,155 Y v LUBRI(mailling, AITARATUS. i.; l Y Preston Uilhilfm,` Brookline, 1mg-)ungut to l I V,mamita Corporation, Chim, ma. comn i tion of` Delaware Apuation Anruf 17, *1930;* serial Nb. 445,933 fk 14 w1. zei-47.5) *,p

` Thisinvention relates lubricating apparatusV and more particularly'to improvements'in apparatus for charging or lling lubricant compressors and the method of doing the same. The compres- 5 sors to which thismethod and apparatus apply are of the well-known types having a-cylindrical reservoir, aV plunger and plunger rod'extending through one end having a handle, and the cylindrical, reservoir having a nozzle 'at its other end adapted to engage a lubricant fitting. The pres.-

Aent method of iilling these compressors with lubricant is to unscrewthecap atthe handle end, withdraw the plunger, and manuallyfillfthe cylindrical reservoir with lubricant and then replace the plunger and cap. y

One of the principalobjectsof my Vinvention is the 'provision of an improved methodof charging lubricant .compressors of -the .type mentioned by forcing lubricant -into the compressor 'through the nozzle end as the plunger therein is'ref tracted. l f

A furtherobjec't of myinventionis to provide' an improved iilling mechanism for-lubricant compressors which simultaneously retracts Vthe compressor plunger and charges the lubricant cham- 'A further object of my invention is to provide an improved lubricantfcompr'essor filling device for screw `type compressorswhich will perform the double function of retractin'gthe compressor plunger, thereby enlarging'the cylinder, and simultaneously charging the cylinder with lubri- A further object of theginvention is to provide a device of the type specified which will fill lubricant compressors in a minimum amount of time,

will require only a simple operation, and to which and from which a compressor may be easily attached or detached. f

improved filling means for lubricant compressors -whereby no leakage is possible and' any overflow is returned to the lubricant reservoir. f Other objects and 'advantages' of my invention will appear more fully from th following description andffrom the acoo'rnpanyin`g drawings, in

which shimilar charactersf of1efe'renceV indicate similar partsthroughout the several views.

Fig. 1 isaf'cross-sectlonal view ofthe lubricant reservoir and base showing a compressorin posi'- tiontobelled; I l f fr Fig. 2 is'an enlarged fragmentary front elevational view of the compressor holdingimeans and associated parts, parts VAbeing broken. in .section Y to show Other-Darts:

and y' which-will be hereinafter more apparent.

A further object of the inventionl is to provide '.Means to reciprocatecplunger; 36 are provided.

thev drawings .(FSU- 3' is al plan sectionalview taken'onthe line I 3-3ofFig.1;

-Fig 4 is an enlarged frgnientaryfviewo the upper end of the compressor and associated parts ;V

- Referring nowto the drawings, .of` which there aretwo sheets, I have shown a tank or lubricant reservoir 10 mounted upon a base 12,7 which base 05 may be rigidly fastened toy a foundation or mounted upon a movable truck as desired,

Base member 12 is provided with a tapped-i111- Aper opening.,l4 into whichthe lower'endwof tank l10 is ,screwAthreadedly secured. The tank is m jclosed at its upper endby a removable cover A*plate 16 andatvits,lowerend-` by a horizontal `wall portiongl of base 12. Breatheror air holes 20 are'provided near the upperend of the dtank and a typical lheating kelement A22,- such as theone u shown- V is flxedly secured to and extends inside ofthe nearitsilower end. `The purpose .of y the heating element is to thin hard or plastic lu,- bricants if tisdesired.

-A pasageway 24ex tends below the horizontal 80 i wall 18 and communcateswith. a vertical cylin- Vclricalchamber- 26 in base member 12.' YA pair ofopenings 28 and 30 in wall 18;are closed;by spring pressed'valves 32 and 34. As is apparent from the drawings (Figfl) these values may be actuatedinone direction only, valve 28 opening downwardly andv valve 34 upwardly; Itwill be noted vthatthe spring'ofvalve 28 is considerably weaker thanthe spring of valve 34 for a reason v A: vertically positionedV plunger is reciproca'- bly mountedin a cylindrical bore 38 Ydirectly above chamber 26. A gasket 40 and follower 42 arey providedl at the open end of bore 38 -to:;fur' nish ya leak-proof seal around plunger 36.- 95

aidconsist' of alever'M attached @to areduced Y portion 45 of the; plunger` near its upper enell by a.. cross-pin 46." Thelever i is ;spli t to ien,-

well-known marmerfto yal source, of power or it. 1

may beformed, asshowninthe drawings; with a pedal V52 izomanually reciprocate plunger l36.

Springs 3-7'are connected .between lever 44 and a bracket 80 toreturnthe plunger and associatedl elements to :the normal. position I shown in .i no

` ess 74. The lead screws 68 and 70 are secured .at their upper ends in bossesv76 and 78 of arbracket- 80 whichris attached to tank 10: by means of rivets 82. Locking pins 84 and.-86..pass through the upper ends of theleadsscrews andintobosses 76 and 78. Y l v Apair of planetary'gears 88 and.90 are. horizontallypositioned opposite gear'wheel'GO and' in mesh therewith. Gears 88 and 90, each have. a central aperture 92 adapted to thread onto the` which engage thethread g'roovesllif` Abc've' platform 54' a compressor clamping unit lead sclews and 7 0 vhavinga pair of lugs 94 7981s:rv plvotally mountedona bearing pin 100` in an extended arm 102of Abracket 80.y Clamping unit 9871s fo'rme'dwith a semicircular opening 99 opposite a similar opening 101 in bracket 80, whichopenings in the closed-position ofclamp 981mm acircularl aperture. The clamping unit v 98` also has an-elongatediopening 103 in its 'free end 104. .y

A latching means `is:provided-adjacent the-free -end-o1? the clamping-unit'98 and may comprise an eye-bolt 106 pivotally'rmunted on astud'107 in bracket 80 having a wing-nut 108 screw-threaded `thereon.vv 'f Means are' provided near the `upper end l`of resfervoir 10 for rigidly holding Ythe discharge end of a lubricant compressor, 'and comprises Aa L'braclnt 110 secured tothe reservoir by rivets 112. Bracket 110 has a tapped opening'l 112 -in"i'its -lower1surface into whichla conduit -pipe114 is screw-threadedly secured. Conduit vpipe-1i'14"is suitably connected by a pipe union to another `cor'iduit '116 which extends 'down to base 12 and isfin communication" lwith 'passageway' 24.

Bracket 110 has anainternal chamber 4118 `communlcating-with opening 112 and also-:With a passageway-119 ina fitting support member 120. `The-ntting support member 120 is attached to a :lange on bracket' 1101by means of setfscrews 121and has va tappedfopening`1`22 infi'ts lower Iaoe into/which a fitting A is screw-threadedly secured. l J l f.. '1e

Fitting A -is of a well-known typei commonly known in the-ara--provided--with plural'threads upon its exterior periphery for engagement with cooperating threads'on the nozzle of `a lubricant compressor.AV An empty lubricant compressor B,

-which itis desired to liill, is'shownattached to.V nttin'grA extending downwardly" therefrom with its handle portion C9 upon between afpair ofgu'ide'pins 55.v

lubricanticompressor B is of thetype de- `sxnibed in the vco-pendlng application of Howard J.'Murphy, filed. February 11,- 1925, 'bearing' Seplatform f 54 rial #8,584, `and'will not: bedescribed'here'iin.

any great detail. It will; be.v sufncientin this 'application testate that thecompressor-is pro'- vided with the usual screw-operated typeplunger for extruding"lubx'lcantffiunder pressure,`by ad- I vancing the plunger 'upon Irotation V.of the-,handle C.: Similarly, to '-retractrthe plunger-from the .nomleend ofthel'compressor tothe opposi'teiend, the handle C..is reverselyrtated; f I; .n Y L To charge a lubricant compressor of the type described with my improved apparatus, clamp 90 is opened by rotating it away from bracket 8O on pin 100. A compressor B is attached to iitting A in the manner described and suspended therefrom, With its handle C resting on platform 54.

The clampingvunit is nowy swung to its closed positioma portion of compressor B being enclosed by the semicircular openings 99 and 101. Packing material D is wrapped around the compressor B at this point before the clamping is done, thereby effectively holding the compressor against turning,'yet allowing aV certain amount of sideplayfdue to .they compressiblity of the packing.

Assuming that there is a quantity .'of lubricant in reservoir llO'and that chamber 24, cylinder 26 and conduits 114, 116 have been iilled with lubricant by a'cntinued reciprocation of plunger 36,

and thatv acompressor B is attached to fitting A,

'mtatefin a counter-clockwise*direction through the medium of lgears 88'and -90 which rotate on lead screws 68 and 70 and drive gear 60 attached to. platform 54.l HandleQC resting Yon' platform 54 between/guide vpins55` will thus be rotated and the plungerfrod of the compressor will. be :un- `screwed -or-backed outof the compressor, lwithdrawing the plunger also and graduallygenlarging the' compressor cylinder. Simultaneously jwith this operation plunger 36 is entering cylinder 26, displacing lubricant 'and causing lit to :low through conduitsl 114 and 116,.the passageways in bracket 1l0-andA fitting supportmember 120, and through fitting A through vthe `nozzle of compressor-.B into the cylinder., y Y

It is obvious that compressor B is being charged or lled with lubricant lunder pressureas' rapidly .as the plunger is withdrawn, thus permitting no air to` enter-thechamberas the plunger is withl' drawn, assuring a filling operation which will charge the-compressorefliciently and quickly.

-Clamp 98 isnow swung openland compressor B removed bylunscrewing it from fitting A.. After the-compressor isl removed `springsf43 will operate to restore lever 44 to normal position, withdrawing plunger 36 from cylinder 26, and .causing valve 28 toLopen-and to allow lubricant to .fill chamber-24 andcylinder 26.

It Will..-be apparentfrom the drawings that the. capacity of compressor B gisequal to the displacementfof plunger. 36in cylinder' 26. I When it is desired to fill a compressor of a smalier ca- 'pacity., check valve-.34vv serves to allow surplus lubricant to be .forcedinto reservoir l0. While Ihave shown and described one embodiment of my invention, I ,desire it to be understood that many other types of compressors may be filled by this method and with this apparatus. Forexample, compressors of the type shown in vPatent No. 1,307,733, issued to Arthur V. Gullborghnay be lled by substituting the fitting of theA Grullborgapatentv for the fitting'A described .andinterconnecting the Gullborg compressor and fitting inthe manner explained in the patent. It isevident that any `Compressor having a nozzle end for attachment to a fitting, may be charged by the same apparatus, `the only necessary labor .being to substituteY thej particular type .of fitting adapted to thevcompressor in'place of fitting A. Y

Having thus described my invention.. what II claimv and desireto secure by. United Statesl Letters Patentis'asrfollows: y

- f. 1. Apparatus for filling lubricant-compressors includinga base member, a high pressure cylinder in'` said base, 'a reservoir mounted'on said Lbase in plunger rod and lubricant.

communication with said high pressure cylinder. means attached' to, said reservoir. for rigidlyV supporting a lubricant compressor includingmeans attachable to the discharge end ofthe compressor der,.,and means manually` operable for simultaneously retracting the compressor plunger and sors, including a base member, 'a reservoir mounted thereon, a high pressure cylinder in commu-` nicationwith said reservoir, a bracket having Va passagewaytherein' communicating withv said high pressure'cylinder, a standard lubricant fitting mounted .insaid bracket through which flu-1 bricant is forced from said cylinder into the nozzle of a lubricant compressor attached thereto and meansV manually operable for simultane- Vously retracting the compressor plunger and plunger rod and charging the compressor with lubricant. i Y

3. A device for charging lubricant `compressors including a source of lubricant under pressure, a valved lubricant fitting supplied with said lubricant, the valve of said fitting adapted to be opened by attaching a nozzle of a lubricant com-V pressor to said fitting to' allow lubricant to flow Vinto said compressor and means manuallyop-V erable. for simultaneously retracting the compressor plunger and plunger rod and charging the compressor with lubricant. Y Y

4. A device for charging lubricant compressors including aY lubricant reservoir, a high pressure cylinder, a plunger therein, a revolvableV platform associated with said plunger, a lever for actuating said plunger, conduits extending from said cylinder to a valved lubricant fitting, said Vfitting adapted to be attached to a compressor to be filled, said compressor having its handle resting on said platform, and means on said platform for revolving said' handle las the plunger isactuated. 'j v 5. A device for char including a` lubricant reservoir, a highpressure cylinder, a plunger therein, a revolvable platform associated with said plunger, a lever for actuating said plungenvconduits extending from said cyl- Vinder to a Vvalved lubricant fitting, said'tting adapted to be attached to` a compressor to be filled, said compressor having its handle resting on said platform, means on said platform for ren volving said handle asjsaid plunger is actuated,

1 and clamping means for rigidly holding said compressor against movement. Y i Y 6. ,Apparatus for charging lubricant dispensing compressors` including a source of lubricant under pressure, means `'associated therewith for rigidly supporting a rlubricant compressor by its discharge end and establishing communication therewith through said end, and means manually operable for simultaneously retracting the com'- pressor plunger and plunger rod and charging the l screw type plungers therein', including a lubricant` reservoir, a pressure cylinder and plunger asso- Vciated therewith, a'revolving platform at the. upper end of said plunger, a lubricant -fitting and passageway from said cylinder to said fitting,A clamping means forsupporting a lubricant compressor, said compressor adapted kto be attached compressor with lubricant. 1

7. Apparatus forcharging compressorsV having to said fitting and-supported in said clamping means having its handle inverted and resting on charging L the compressor with y ging lubricant compressors 'rigidly holding said Withsaid ,plunger-and; said platform for vsimulev taneously retracting the compressor plunger and forcing lubricantunder pressure into the com- .pressor through the fitting. 1in communication with vsaid high pressurefcylinthe; revolvable platform, and means associated ,8, Apparatus for charging compressors having screw type plungers therein, including a lubricant Y greservoir, a pressure cylinder and plunger assojciated therewith, a revolvingv platformat.' the "upper end of said plunger, alubricant fitting, a v passageway from saidcylinderto .said fitting,

clamping means `for supporting-a lubricant com.- pressor; said compressor adapted to be attached toisaidf-fitting. and supported vin saidV clamping means Vhaving its handle inverted and, restingon the revolvable platform',v means associated with said plunger and said platform for simultaneously retracting the compressor plunger and forcingv lubricant into the compressorthrough the fitting, and means for returning surplus lubricant to the reservoir when the compressor is filled.

`9. vA device for chargingV lubricant .compressors includingA a lubricant reservoir, afheating element thereinV for reducing to a fluid state semi-hard or plastic lubricant, a high pressure cylinder, a

cylinder, a plunger therein, a revolvable platform` mounted on the top of said plunger, a lever for Vplunger therein, a revolvable platform associated actuating said plunger, conduits extending vfrom said cylinder to a valved lubricant fitting, said fitting adapted to be attachedto a compressor to be 1led,.said compressor'having its handle resting onsaid platform, means on said platform for revolving saidhandle as said plunger is actuated, and clamping means for rigidly holding said compressor against "movement Y Y 11. A device for charging lubricant compressorsV including a lubricant reservoir, a high pressure cylinder, a plunger therein,,aplatformmounted on the top of said plungena horizontal gear thereon, a pair of planetary gears on opposite Vsides of said first-named gear meshing therewith, a pair of vertically positioned lead screws, said planetary gears threadedly mounted thereon and adapted to rotate said first-named gear While ascending or descending said lead screws, a lever for actuating said plunger, aconduit extending f plunger is actuated, and clampingV means for` compressor against movement. Y

12,. Apparatus for 'charging compressors having screw type plungers therein, `including a lubricant reservoir, a' pressure cylinder and Yplunger associated therewith, a lubricant'fitting, a vpassageway from said cylinder to said fitting, clamping means for supporting a lubricant compressor, avrevolvable platform, said compressor adapted to be attached to saidfitting and supported in said clamping means with its handle inverted and resting on the revolvable platform, fand a'pedallyoperated lever for simultaneously retracting the vcompressor plunger and forcing Alubricant into compressor through the fitting. o

13. A device for charging lubricant compressors comprising a lubricant reservoir, a high pressure lcylinder communicating with said lubricant reservoir, aplunger operable in said cylinder, means for manually securing the compressor to be lled in position to receive lubricant 1 discharged from said cylinder, meansoperable by said plunger to retract the operating handle ofthe compressor, and means for returning said plunger to operatin'gcgposition upon removal of said compressor `trom filling position.A Y i A v soA to retract the operating handle of the compressor,

meansrfor returning said plunger to operating position upon removal of said compressor from llngposition,` and means openable uponthe complete lling of Vsaidy compressor to allow the 'excess lubricant pumped from said cylinder to return to said reservoir.

.Y i- 1 PRESTON UPHAM. 

